Turntable



Jan. 15, 1929. 1,699,463

` A. L. cREscl TURNTABLE Filed A ug. '15, 1927 LMC v OQ

ATTORNE Y Patented Jan. 15, 1929.

UNITED STATES ANTHGNY L. CBESCI, OF VINELAND, NEW JERSEY'.

TURNTABLE.

application mea auguit 15, 1927. 'serial No. 212,965.

My invention relates to improvements in turn tables, particularly adapted for display purposes, for use in store windows and show rooms.

The object of my invention is'to provide a turn table of small and compact form, making it portable, and adaptable for displaying articles in a small show window, and at the same time making it strong and rigid for displaying a heavy article, such as a piano, which may be supported upon the small rotating platform'by providing an extension platform which in turn will rest upon the small platform forming part of the turn table; a still further object is to provide a housing of rigid construction having bearings therein for supporting the vertical shaft which carries the platform, arranged so as to prevent the platform from tilting; a still further object is to enclose the gear mechanism, for rotating the vertical shaft, within the housing, which latter forms a chamber adapted for holding oil in which the gearing is immersed; and a still further object is to mount the display platform loosely upon the vertical shaft and rotate the platform from the friction exerted between the parts; a further object is to re* duce the friction between said parts by the use of friction reducing bearings, thus providing a clutch for rotating the platform,

which clutch is located immediately between the platform and the slowest one of the moving parts of the driving mechanism, thus providing means permitting thel platform to be held against rotation when desired, or, in case of an accident, without stopping the motor, and also allowing the motor to be started when the platform is at rest without injuring the motor.

teferring to the accompanying drawing, Figure 1 is a diagram showing a vertical sectional view of the housing as on line 1-1 Figure 2, and showing the revolving platform in sectional perspective; Figure 2 is a` plan View of the housing partly in section; Figure 3 is a vertical sectional view on line 3-3 Figure 2 showing a portion of the revolving platform; and Figure 4 is a vertical sectional view on line 4-4 Figure 2. In the drawing, in which like reference characters refer to like parts, 5 represents a housing of rigid construction, having a bottom wall 6 and integral side walls 7, 8, 9 and 10, and a removable top wall or cover 12 adapted to be secured upon said side Walls by bolts 13. The housing 5 forms a bearing and rigld support for the vertical shaft 14 carrying the rotating platform 17, which latter 1s loosely mounted upon the shaft 14, and rotated by friction of the parts when the s haft 14 is rotated. The housing 5 is provlded with' lugs 15 adapted for detachably securing the same to a base plate 16, which rests upon a loor and supports the ousing 5 without its being fastened to the oor.

The shaft 14 extends through an opening formed in the top wall 12 of the housing 5 and 1s `supported upon the ball thrust bearlng 18, and said shaft is supported laterally by a ball-bearing 19 located in the bottom wall 6 of the housing.

The platform 17 consists of awheel 20 having a hub 21 carrying radial spokes 22, terminating in a rim 23, -and a top plate 25, of sheet metal, which is mounted upon said wheel for supporting an article to be displayed upon the slowly revolving platform.

The vhub 21 of the platform surrounds the upper end of the shaft 14 and is supported upon said shaft by a thrust ball-bearing 27 and held by a ball-bearing 28, located at t-he upper end of the shaft, against tilting movement.

The housing 5 is provided with bearings 30 and 31 located in the side walls 7 and 8, in which bearings is mounted a drive shaft 33 which extends through the bearing 30 without the housing and is operatively connected with a source of power, such as an electric motor 35, for rotating the shaft 33. A driven shaft 36 is mounted in bearings 37 and 3S formed in the walls 9 and 1() of the housing. Said shaft `3G is positioned at right angles to the drive shaft A worm 4() is secured upon the drive shaft and meshes with a worm wheel 41, secured upon the driven shaft 36. Said shaft 36 has secured thereon a worm 42 which meshes with a worm-wheel 43 secured upon the shaft 14. Said shafts 33 and 36 are adjustable longitudinally in their respective bearings by means of screws 45 which enter threaded apertures, formed in the bearings in align-dos ment with said shafts. Said screws 45 are provided with lock nuts 46 for the double '17 at about two revolutions per minute.

housing 5 is plrovided with a pipe fitting 48 through W ich oil may be readily inserted into the oil chamber formed in the housing.

When power is supplied to operate the motor 35 the drive shaft 33 will be rotated at a high speed and the worm 40 on said shaft Will drive the worm Wheel 41 and the shaft 36 at a reduced speed; the worm 42 on the shaft 36 will drive the large worm wheel 43 at a further reduction in speed, thus turning the shaft 14 and the platform By loosely mounting the revolving platform upon the shaft 14 the platform may be held against rotation without stopping the motor; the ball-bearings 27 and 28 form means for further reducing the friction bc- I tween the shaft 14 and the platform, thus forming a/clutch which is located between the revolving platform and the shaft 14 which is the slowest moving driving member of the mechanism. The balLbearings 27 and 28 Will permit the motor to be started without injuring the motor when there is a heavy load on the platform 17, and the latter will gradually pick up speed until it rotates at the same speed as the shaft 14.

I claim 1. A display turn table comprising a housing having integral bottom and side walls formingan oil receptacle, a top wall detachably secured upon the side walls, a bearing located upon the bottom wall, a

'bearing located upon the top wall in vertical alignment with the bearing upon the bottom wall, a shaft rotatably mounted in the bearing on the top wall and removable with the latter from the side walls, a gear wheel secured upon the shaft below the top wall and within said chamber, means for operating said -gear wheel, and a platform mounted upon said shaft above said' top wall and rotatable by said shaft.

2. A display turn table comprising a vertically positioned shaft, a bearing in which said shaft is rotatably mounted, means for rotating said shaft, a shoulder upon t-he upper portion of said shaft and a platform loosely mounted upon the upper end of said shaft and supported upon said shoulder whereby the platform may be rotated by friction between the platform and said shoulder or retarded in its speed of revolution relatively to the shaft.

8. A display turn table comprising a housing, a shaft mounted vertically in said housing, means for rotating said shaft, a platform, a hub upon said platform adapted to embrace the upper end of said shaft, a shoulder secured upon said shaft located above said housing upon which said hub is supported, and a friction reducing bearing mounted between said hub and said shoulder whereby said shaft may rotate freely when the platform is held against rotation with said shaft.

In testimony whereof I affix my signa-ture.

ANTHONY L. CRESCI. 

